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fix(mcp): give 'mcp add --command' a distinct argparse dest

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The --command flag of `hermes mcp add` shared its argparse dest with the
top-level subparser (`dest="command"` in `hermes_cli/_parser.py`). When
the flag was omitted, argparse still wrote `args.command = None`,
clobbering the top-level value of `"mcp"`. The dispatcher then saw
`args.command is None` and fell through to interactive chat, so
`hermes mcp add ...` silently launched chat instead of registering the
server. `cmd_mcp_add` was never reached.

Use `dest="mcp_command"` on the flag and read it from `cmd_mcp_add`.
The user-facing CLI flag `--command` is unchanged; only the in-memory
namespace attribute moves. Also updates the `_make_args` helper in
`tests/hermes_cli/test_mcp_config.py` to populate the new dest, and
adds `tests/hermes_cli/test_mcp_add_command_dest.py` with a parser-
level regression test.

Closes #19785.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
badfriend 2026-05-04 21:28:13 +07:00 • committed by Teknium
parent 333598cb0e
commit 4f364c4e99
4 changed files with 105 additions and 7 deletions
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10
hermes_cli/main.py
View file

@ -10007,7 +10007,15 @@ Examples:
)
mcp_add_p.add_argument("name", help="Server name (used as config key)")
mcp_add_p.add_argument("--url", help="HTTP/SSE endpoint URL")
mcp_add_p.add_argument("--command", help="Stdio command (e.g. npx)")
# dest="mcp_command" so this flag does not clobber the top-level
# subparser's args.command attribute, which the dispatcher reads to
# route to cmd_mcp. Without an explicit dest, argparse derives
# dest="command" from the flag name and sets it to None when the
# flag is omitted, causing `hermes mcp add ...` to fall through to
# interactive chat.
mcp_add_p.add_argument(
"--command", dest="mcp_command", help="Stdio command (e.g. npx)"
)
mcp_add_p.add_argument(
"--args", nargs="*", default=[], help="Arguments for stdio command"
)

5
hermes_cli/mcp_config.py
View file

@ -221,7 +221,10 @@ def cmd_mcp_add(args):
"""Add a new MCP server with discovery-first tool selection."""
name = args.name
url = getattr(args, "url", None)
command = getattr(args, "command", None)
# Read from `mcp_command` (set by --command via explicit dest) — see
# mcp_add_p.add_argument("--command", dest="mcp_command", ...) in
# hermes_cli/main.py for why the dest is renamed.
command = getattr(args, "mcp_command", None)
cmd_args = getattr(args, "args", None) or []
auth_type = getattr(args, "auth", None)
preset_name = getattr(args, "preset", None)